LEWISTON — Police from three agencies Wednesday night were searching for a suspect accused of robbing the Rite Aid pharmacy on Lisbon Street.

Lewiston police were called to the pharmacy at about 8 p.m. when a Rite Aid employee reported a partially masked man went into the pharmacy, claiming to have a gun.

Police did not say whether the suspect demanded drugs or money or whether any was obtained.

Witnesses told police the suspect may have fled in a white SUV that was last seen heading down South Avenue, toward the river.

Local police swarmed the scene but the suspect was not found. Investigators searching for the culprit began looking for a connection between the Wednesday heist and a similar robbery at the Main Street Rite Aid on Monday.

In that robbery, police said a man walked into the pharmacy, demanded the prescription painkiller OxyContin and fled once a quantity of the drug was handed over. The suspect was describe as a white man in a winter snorkel jacket with a fur-lined hood, police said.

In the Wednesday night robbery, witnesses told police the suspect was a white man wearing a blue coat with a cap partially pulled over his face.

As they searched for the suspect Wednesday night, local police enlisted the help of Auburn Police and the Androscoggin County Sheriff’s Department. By 8:30 p.m., officers from each of the agencies were heading to a location in Minot as their investigation continued.

Rite Aid has offered a $3,000 reward for the capture of the suspect who robbed the Main Street pharmacy on Monday. But later Wednesday night, no arrest had been made in either heist.

Anyone with information is asked to call the local police department.